/*****************************************************************************

 * Copyright (C) 2013-2020 MulticoreWare, Inc

 *

 * Authors: Steve Borho <steve@borho.org>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.

 *

 * This program is also available under a commercial proprietary license.

 * For more information, contact us at license @ x265.com.

 *****************************************************************************/

#include "common.h"

#include "primitives.h"

namespace X265_NS {

// x265 private namespace

extern const uint8_t lumaPartitionMapTable[] =

{

//  4          8          12          16          20  24          28  32          36  40  44  48          52  56  60  64

    LUMA_4x4,  LUMA_4x8,  255,        LUMA_4x16,  255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 4

    LUMA_8x4,  LUMA_8x8,  255,        LUMA_8x16,  255, 255,        255, LUMA_8x32,  255, 255, 255, 255,        255, 255, 255, 255,        // 8

    255,        255,      255,        LUMA_12x16, 255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 12

    LUMA_16x4, LUMA_16x8, LUMA_16x12, LUMA_16x16, 255, 255,        255, LUMA_16x32, 255, 255, 255, 255,        255, 255, 255, LUMA_16x64, // 16

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 20

    255,        255,      255,        255,        255, 255,        255, LUMA_24x32, 255, 255, 255, 255,        255, 255, 255, 255,        // 24

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 28

    255,        LUMA_32x8, 255,       LUMA_32x16, 255, LUMA_32x24, 255, LUMA_32x32, 255, 255, 255, 255,        255, 255, 255, LUMA_32x64, // 32

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 36

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 40

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 44

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, LUMA_48x64, // 48

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 52

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 56

    255,        255,      255,        255,        255, 255,        255, 255,        255, 255, 255, 255,        255, 255, 255, 255,        // 60

    255,        255,      255,        LUMA_64x16, 255, 255,        255, LUMA_64x32, 255, 255, 255, LUMA_64x48, 255, 255, 255, LUMA_64x64  // 64

};

/* the "authoritative" set of encoder primitives */

EncoderPrimitives primitives;

void setupPixelPrimitives_c(EncoderPrimitives &p);

void setupDCTPrimitives_c(EncoderPrimitives &p);

void setupFilterPrimitives_c(EncoderPrimitives &p);

void setupIntraPrimitives_c(EncoderPrimitives &p);

void setupLoopFilterPrimitives_c(EncoderPrimitives &p);

void setupSaoPrimitives_c(EncoderPrimitives &p);

void setupSeaIntegralPrimitives_c(EncoderPrimitives &p);

void setupLowPassPrimitives_c(EncoderPrimitives& p);

void setupCPrimitives(EncoderPrimitives &p)

{

    setupPixelPrimitives_c(p);      // pixel.cpp

    setupDCTPrimitives_c(p);        // dct.cpp

    setupLowPassPrimitives_c(p);    // lowpassdct.cpp

    setupFilterPrimitives_c(p);     // ipfilter.cpp

    setupIntraPrimitives_c(p);      // intrapred.cpp

    setupLoopFilterPrimitives_c(p); // loopfilter.cpp

    setupSaoPrimitives_c(p);        // sao.cpp

    setupSeaIntegralPrimitives_c(p);  // framefilter.cpp

}

void enableLowpassDCTPrimitives(EncoderPrimitives &p)

{

    // update copies of the standard dct transform

    p.cu[BLOCK_4x4].standard_dct = p.cu[BLOCK_4x4].dct;

    p.cu[BLOCK_8x8].standard_dct = p.cu[BLOCK_8x8].dct;

    p.cu[BLOCK_16x16].standard_dct = p.cu[BLOCK_16x16].dct;

    p.cu[BLOCK_32x32].standard_dct = p.cu[BLOCK_32x32].dct;

    // replace active dct by lowpass dct for high dct transforms

    p.cu[BLOCK_16x16].dct = p.cu[BLOCK_16x16].lowpass_dct;

    p.cu[BLOCK_32x32].dct = p.cu[BLOCK_32x32].lowpass_dct;

}

void setupAliasPrimitives(EncoderPrimitives &p)

{

#if HIGH_BIT_DEPTH

    /* at HIGH_BIT_DEPTH, pixel == short so we can alias many primitives */

    for (int i = 0; i < NUM_CU_SIZES; i++)

    {

#if !defined(X265_ARCH_ARM64)

        p.cu[i].sse_pp = (pixel_sse_t)p.cu[i].sse_ss;

#endif

        p.cu[i].copy_ps = (copy_ps_t)p.pu[i].copy_pp;

        p.cu[i].copy_sp = (copy_sp_t)p.pu[i].copy_pp;

        p.cu[i].copy_ss = (copy_ss_t)p.pu[i].copy_pp;

        p.chroma[X265_CSP_I420].cu[i].copy_ps = (copy_ps_t)p.chroma[X265_CSP_I420].pu[i].copy_pp;

        p.chroma[X265_CSP_I420].cu[i].copy_sp = (copy_sp_t)p.chroma[X265_CSP_I420].pu[i].copy_pp;

        p.chroma[X265_CSP_I420].cu[i].copy_ss = (copy_ss_t)p.chroma[X265_CSP_I420].pu[i].copy_pp;

        p.chroma[X265_CSP_I422].cu[i].copy_ps = (copy_ps_t)p.chroma[X265_CSP_I422].pu[i].copy_pp;

        p.chroma[X265_CSP_I422].cu[i].copy_sp = (copy_sp_t)p.chroma[X265_CSP_I422].pu[i].copy_pp;

        p.chroma[X265_CSP_I422].cu[i].copy_ss = (copy_ss_t)p.chroma[X265_CSP_I422].pu[i].copy_pp;

    }

#endif

    /* alias chroma 4:4:4 from luma primitives (all but chroma filters) */

    p.chroma[X265_CSP_I444].cu[BLOCK_4x4].sa8d = NULL;

    for (int i = 0; i < NUM_PU_SIZES; i++)

    {

        p.chroma[X265_CSP_I444].pu[i].copy_pp = p.pu[i].copy_pp;

        p.chroma[X265_CSP_I444].pu[i].addAvg[NONALIGNED]  = p.pu[i].addAvg[NONALIGNED];

        p.chroma[X265_CSP_I444].pu[i].addAvg[ALIGNED] = p.pu[i].addAvg[ALIGNED];

        p.chroma[X265_CSP_I444].pu[i].satd    = p.pu[i].satd;

        p.chroma[X265_CSP_I444].pu[i].p2s[NONALIGNED]     = p.pu[i].convert_p2s[NONALIGNED];

        p.chroma[X265_CSP_I444].pu[i].p2s[ALIGNED] = p.pu[i].convert_p2s[ALIGNED];

    }

    for (int i = 0; i < NUM_CU_SIZES; i++)

    {

        p.chroma[X265_CSP_I444].cu[i].sa8d    = p.cu[i].sa8d;

        p.chroma[X265_CSP_I444].cu[i].sse_pp  = p.cu[i].sse_pp;

        p.chroma[X265_CSP_I444].cu[i].sub_ps  = p.cu[i].sub_ps;

        p.chroma[X265_CSP_I444].cu[i].add_ps[NONALIGNED]  = p.cu[i].add_ps[NONALIGNED];

        p.chroma[X265_CSP_I444].cu[i].add_ps[ALIGNED] = p.cu[i].add_ps[ALIGNED];

        p.chroma[X265_CSP_I444].cu[i].copy_ps = p.cu[i].copy_ps;

        p.chroma[X265_CSP_I444].cu[i].copy_sp = p.cu[i].copy_sp;

        p.chroma[X265_CSP_I444].cu[i].copy_ss = p.cu[i].copy_ss;

    }

    p.cu[BLOCK_4x4].sa8d = p.pu[LUMA_4x4].satd;

    /* Chroma PU can often use luma satd primitives */

    p.chroma[X265_CSP_I420].pu[CHROMA_420_4x4].satd   = p.pu[LUMA_4x4].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_8x8].satd   = p.pu[LUMA_8x8].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_16x16].satd = p.pu[LUMA_16x16].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_32x32].satd = p.pu[LUMA_32x32].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_8x4].satd   = p.pu[LUMA_8x4].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_4x8].satd   = p.pu[LUMA_4x8].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_16x8].satd  = p.pu[LUMA_16x8].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_8x16].satd  = p.pu[LUMA_8x16].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_32x16].satd = p.pu[LUMA_32x16].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_16x32].satd = p.pu[LUMA_16x32].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_16x12].satd = p.pu[LUMA_16x12].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_12x16].satd = p.pu[LUMA_12x16].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_16x4].satd  = p.pu[LUMA_16x4].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_4x16].satd  = p.pu[LUMA_4x16].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_32x24].satd = p.pu[LUMA_32x24].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_24x32].satd = p.pu[LUMA_24x32].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_32x8].satd  = p.pu[LUMA_32x8].satd;

    p.chroma[X265_CSP_I420].pu[CHROMA_420_8x32].satd  = p.pu[LUMA_8x32].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_4x8].satd   = p.pu[LUMA_4x8].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_8x16].satd  = p.pu[LUMA_8x16].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_16x32].satd = p.pu[LUMA_16x32].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_32x64].satd = p.pu[LUMA_32x64].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_4x4].satd   = p.pu[LUMA_4x4].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_8x8].satd   = p.pu[LUMA_8x8].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_4x16].satd  = p.pu[LUMA_4x16].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_16x16].satd = p.pu[LUMA_16x16].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_8x32].satd  = p.pu[LUMA_8x32].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_32x32].satd = p.pu[LUMA_32x32].satd;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_16x64].satd = p.pu[LUMA_16x64].satd;

    //p.chroma[X265_CSP_I422].satd[CHROMA_422_8x12]  = satd4<8, 12>;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_8x4].satd  = p.pu[LUMA_8x4].satd;

    //p.chroma[X265_CSP_I422].satd[CHROMA_422_16x24] = satd8<16, 24>;

    //p.chroma[X265_CSP_I422].satd[CHROMA_422_12x32] = satd4<12, 32>;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_16x8].satd = p.pu[LUMA_16x8].satd;

    //p.chroma[X265_CSP_I422].satd[CHROMA_422_4x32]  = satd4<4, 32>;

    //p.chroma[X265_CSP_I422].satd[CHROMA_422_32x48] = satd8<32, 48>;

    //p.chroma[X265_CSP_I422].satd[CHROMA_422_24x64] = satd8<24, 64>;

    p.chroma[X265_CSP_I422].pu[CHROMA_422_32x16].satd = p.pu[LUMA_32x16].satd;

    //p.chroma[X265_CSP_I422].satd[CHROMA_422_8x64]  = satd8<8, 64>;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_2x2].sa8d = NULL;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_4x4].sa8d = p.pu[LUMA_4x4].satd;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_8x8].sa8d = p.cu[BLOCK_8x8].sa8d;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_16x16].sa8d = p.cu[BLOCK_16x16].sa8d;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_32x32].sa8d = p.cu[BLOCK_32x32].sa8d;

    p.chroma[X265_CSP_I422].cu[BLOCK_422_2x4].sa8d = NULL;

    p.chroma[X265_CSP_I422].cu[BLOCK_422_4x8].sa8d = p.pu[LUMA_4x8].satd;

    /* alias CU copy_pp from square PU copy_pp */

    for (int i = 0; i < NUM_CU_SIZES; i++)

    {

        p.cu[i].copy_pp = p.pu[i].copy_pp;

        for (int c = 0; c < X265_CSP_COUNT; c++)

            p.chroma[c].cu[i].copy_pp = p.chroma[c].pu[i].copy_pp;

    }

    p.chroma[X265_CSP_I420].cu[BLOCK_420_2x2].sse_pp = NULL;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_4x4].sse_pp = p.cu[BLOCK_4x4].sse_pp;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_8x8].sse_pp = p.cu[BLOCK_8x8].sse_pp;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_16x16].sse_pp = p.cu[BLOCK_16x16].sse_pp;

    p.chroma[X265_CSP_I420].cu[BLOCK_420_32x32].sse_pp = p.cu[BLOCK_32x32].sse_pp;

    p.chroma[X265_CSP_I422].cu[BLOCK_422_2x4].sse_pp = NULL;

}

void x265_report_simd(x265_param* param)

{

    if (param->logLevel >= X265_LOG_INFO)

    {

        int cpuid = param->cpuid;

        char buf[1000];

        char *p = buf + snprintf(buf, sizeof(buf), "using cpu capabilities:");

        char *none = p;

        for (int i = 0; X265_NS::cpu_names[i].flags; i++)

        {

            if (!strcmp(X265_NS::cpu_names[i].name, "SSE")

                && (cpuid & X265_CPU_SSE2))

                continue;

            if (!strcmp(X265_NS::cpu_names[i].name, "SSE2")

                && (cpuid & (X265_CPU_SSE2_IS_FAST | X265_CPU_SSE2_IS_SLOW)))

                continue;

            if (!strcmp(X265_NS::cpu_names[i].name, "SSE3")

                && (cpuid & X265_CPU_SSSE3 || !(cpuid & X265_CPU_CACHELINE_64)))

                continue;

            if (!strcmp(X265_NS::cpu_names[i].name, "SSE4.1")

                && (cpuid & X265_CPU_SSE42))

                continue;

            if (!strcmp(X265_NS::cpu_names[i].name, "BMI1")

                && (cpuid & X265_CPU_BMI2))

                continue;

            if ((cpuid & X265_NS::cpu_names[i].flags) == X265_NS::cpu_names[i].flags

                && (!i || X265_NS::cpu_names[i].flags != X265_NS::cpu_names[i - 1].flags))

                p += snprintf(p, sizeof(buf) - (p - buf), " %s", X265_NS::cpu_names[i].name);

        }

        if (p == none)

            snprintf(p, sizeof(buf) - (p - buf), " none!");

        x265_log(param, X265_LOG_INFO, "%s\n", buf);

    }

}

void x265_setup_primitives(x265_param *param)

{

    if (!primitives.pu[0].sad)

    {

        setupCPrimitives(primitives);

        /* We do not want the encoder to use the un-optimized intra all-angles

         * C references. It is better to call the individual angle functions

         * instead. We must check for NULL before using this primitive */

        for (int i = 0; i < NUM_TR_SIZE; i++)

            primitives.cu[i].intra_pred_allangs = NULL;

#if ENABLE_ASSEMBLY

#if defined(X265_ARCH_X86) || defined(X265_ARCH_ARM64)

        setupIntrinsicPrimitives(primitives, param->cpuid);

#endif

        setupAssemblyPrimitives(primitives, param->cpuid);

#endif

#if HAVE_ALTIVEC

        if (param->cpuid & X265_CPU_ALTIVEC)

        {

            setupPixelPrimitives_altivec(primitives);       // pixel_altivec.cpp, overwrite the initialization for altivec optimizated functions

            setupDCTPrimitives_altivec(primitives);         // dct_altivec.cpp, overwrite the initialization for altivec optimizated functions

            setupFilterPrimitives_altivec(primitives);      // ipfilter.cpp, overwrite the initialization for altivec optimizated functions

            setupIntraPrimitives_altivec(primitives);       // intrapred_altivec.cpp, overwrite the initialization for altivec optimizated functions

        }

#endif

        setupAliasPrimitives(primitives);

        if (param->bLowPassDct)

        {

            enableLowpassDCTPrimitives(primitives); 

        }

    }

    x265_report_simd(param);

}

}

#if ENABLE_ASSEMBLY && X265_ARCH_X86

/* these functions are implemented in assembly. When assembly is not being

 * compiled, they are unnecessary and can be NOPs */

#else

extern "C" {

int PFX(cpu_cpuid_test)(void) { return 0; }

void PFX(cpu_emms)(void) {}

void PFX(cpu_cpuid)(uint32_t, uint32_t *eax, uint32_t *, uint32_t *, uint32_t *) { *eax = 0; }

void PFX(cpu_xgetbv)(uint32_t, uint32_t *, uint32_t *) {}

#if X265_ARCH_ARM == 0

void PFX(cpu_neon_test)(void) {}

int PFX(cpu_fast_neon_mrc_test)(void) { return 0; }

#endif // X265_ARCH_ARM

}

#endif